Summary of Significant Accounting Policies (Details) ft² in Thousands |
9 Months Ended | 12 Months Ended | ||
|---|---|---|---|---|
Apr. 24, 2017 |
Sep. 27, 2018
ft²
state
segment
facility
|
Dec. 27, 2018 |
Dec. 28, 2017 |
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| Real Estate Properties [Line Items] | ||||
| Number of reportable segments | segment | 1 | |||
| Number of states with facilities | state | 26 | |||
| Number of distribution centers | 3 | |||
| Fiscal year period | 364 days | 364 days | ||
| Fiscal quarter period | 91 days | |||
| Stock split conversion ratio | 321.820 | |||
| Minimum | ||||
| Real Estate Properties [Line Items] | ||||
| Fiscal year period | 364 days | |||
| Maximum | ||||
| Real Estate Properties [Line Items] | ||||
| Fiscal year period | 371 days | |||
| Warehouse Format Store [Member] | ||||
| Real Estate Properties [Line Items] | ||||
| Number of stores | 95 | |||
| Area of facility | ft² | 75 | |||
| Small Format Store [Member] | ||||
| Real Estate Properties [Line Items] | ||||
| Number of stores | 1 | |||
| X | ||||||||||
- Definition The length of the fiscal quarter, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. No definition available.
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| X | ||||||||||
- Definition The length of the fiscal year, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. No definition available.
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| X | ||||||||||
- Definition The number of distribution centers owned or operated by the entity. No definition available.
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- Definition Area of a real estate property. No definition available.
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- Definition Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements. No definition available.
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- Definition The number of states the entity operates in as of the balance sheet date. No definition available.
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- Definition Represents the number of stores. No definition available.
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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- Definition Ratio applied to the conversion of stock split, for example but not limited to, one share converted to two or two shares converted to one. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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